<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<body>
<h2>Hello World!</h2>
<form action="/login1" method="post">
  username:<input name="username">
  <br>
  password:<input type="password" name="password">
  <br>
  age:<input name="age">
  <br>
  birthday:<input name="birthday">
  <br>
  <button>登录</button>
</form>
</body>
</html>
